25152740 has 48 divisors (see below), whose sum is σ = 54840240. Its totient is φ = 9684480.

The previous prime is 25152739. The next prime is 25152767. The reversal of 25152740 is 4725152.

It can be written as a sum of positive squares in 8 ways, for example, as 3771364 + 21381376 = 1942^2 + 4624^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64466 + ... + 64854.

It is an arithmetic number, because the mean of its divisors is an integer number (1142505).

Almost surely, 2^25152740 is an apocalyptic number.

25152740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25152740 is an abundant number, since it is smaller than the sum of its proper divisors (29687500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25152740 is a wasteful number, since it uses less digits than its factorization.

25152740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 25152740 is about 5015.2507414884. The cubic root of 25152740 is about 292.9960511530.

Adding to 25152740 its reverse (4725152), we get a palindrome (29877892).

The spelling of 25152740 in words is "twenty-five million, one hundred fifty-two thousand, seven hundred forty".